Islamic holy city (5)
I believe the answer is:
mecca
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">islamic holy city</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for mecca that I've seen before include "Holiest city of Islam" , "Pilgrimage site" , "hallowed ground" , "Islamic holy city" , "place with devoted visitors" .)